Biology Botany Online MCQ Test Aiims,NEET UG Medical/Dental,Jipmer

NEET UG Botany MCQ-94

Question No:1

The microscope usually used for seeing living cells or tissues is

(A) compound microscope
(B) electron microscope
(C) phase contrast microscope
(D) light microscope

Question No:2

Satellite of chromosome is

(A) Rich in RNA and deficient in DNA
(B) Rich in DNA and deficient in RNA
(C) Rich in protein
(D) Lacks DNA

Question No:3

The property of semipermeability belongs to

(A) Cell wall
(B) Plasma membrane
(C) Mitochondria only
(D) None of the above

Question No:4

Microtubules are absent in

(A) Mitochondria
(B) Flagella
(C) Spindle fibers
(D) Centriole

Question No:5

Which of the following four cell structures is correctly matched with the accompanying description

(A) Plasma membrane – Outer layer of cellulose or chitin, or absent
(B) Mitochondria – Bacteria like elements with inner membrane forming sacs containing chlorophyll found in plant cells and algae.
(C) Chloroplasts- Bacteria like elements with inner membrane highly folded.
(D) Golgi apparatus- Stacks of flattenedvesicles.

Question No:6

Genes present in the cytoplasm of eukaryotic cells are found in

(A) Mitochondria and inherited via egg cytoplasm
(B) Lysosomes and peroxisomes
(C) Golgi bodies and smooth endoplasmic reticulum
(D) Plastids and inherited via male gamete

Question No:7

What is common between chloroplasts, chromo-plasts and leucoplasts?

(A) Presence of pigments
(B) Possession of thylokoid and grama
(C) Storage of starch, proteins and lipids
(D) Ability to multiply by fission – like process

Question No:8

(A) : A cell membrane shows fluid behaviour
(R) : A membrane is a mosaic (or) composite of diverse lipids and proteins

(A) A and R are true and R is the correct explanation of A.
(B) A and R are true and R is not the correct explanation of A.
(C) A is true, R is false
(D) A is false, R is true

Question No:9

The telomeres of eukaryotic chromosomes consists of short sequences of

(A) Thyamine rich repeats
(B) Cytosine rich repeats
(C) Adenine rich repeats
(D) Guanine rich repeats.

Question No:10

(A) : The true nucleus is generally absent in E.coli and other prokaryotes
(R) : An undifferentiated, un-organised fibrilar nucleus without any limiting membrane is observed in prokaryotic cells.

(A) A and R are true and R is the correct explanation of A.
(B) A and R are true and R is not the correct explanation of A.
(C) A is true, R is false
(D) A is false, R is true

Question No:11

In prokaryotes, chromatophores are

(A) Specialized granules responsible for colouration of cells
(B) Structures responsible for organizing the shape of the organism
(C) Incusion bodies lying free inside the cells for carrying out various metabolic activities
(D) Internal membrane systems that may become extensive and complex in photosynthetic bacteria.

Question No:12

(A) : Eukaryotic cells have ability to adopt a variety of shapes and carryout directed movement.
(R) : There are three principal types of protein filaments actin filaments, microtubules and intermediate filaments which constitute the cytoskeleton.

(A) A and R are true and R is the correct explanation of A.
(B) A and R are true and R is not the correct explanation of A.
(C) A is true, R is false.
(D) A is false, R is true

Question No:13

In which one of the following would you expect to find glyoxysomes?

(A) Endosperm of wheat
(B) Endosperm of castor
(C) Palisade cells in leaf
(D) Root hairs

Question No:14

Many cells function properly and divide mitotically even though they do not have

(A) Plama membrane
(B) Cytoskeleton
(C) Mitochondria
(D) Plastids

Question No:15

Three of the following statements regarding cell organells are correct while one is wrong. Which one is wrong?

(A) Lysosomes are double membraned vesicles budded off from Golgi apparatus and contain digestive enzymes.
(B) Endoplasmic reticulm consists of a network of membranous tubules and helps in transport, synthesis and secretion.
(C) Leucoplasts are bound by two membranes, lack pigment but contain their own DNA and protein synthesizing machinery.
(D) Sphaerosomes are single membrane bound and are associated with synthesis and storage of lipids

Question No:16

DNA is present in

(A) Chromosomes and dictyosomes
(B) Chloroplasts and lysosomes
(C) Mitochondria and chloroplasts
(D) Mitochondria and endoplasmic reticulm

Question No:17

Plasmodesmata connections help in

(A) Cytoplasmic streaming
(B) Sychronous mitotic divisons
(C) Locomotion of unicellular organisms
(D) Movement of substances between cells

Question No:18

A chromosome with centromere at one end is called

(A) Telocentric
(B) Metacentric
(C) Excentric
(D) Apocentric

Question No:19

Which of the following organelle is related with photorespiration

(A) Peroxisome
(B) Chloroplast
(C) Mitochondria
(D) Lysosome

Question No:20

A prokaryotic cell lacks:

(A) True nucleus
(B) Nuclear membrane
(C) membrane bound organelles
(D) All of the above